ata: pata_imx: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/drivers/ata/pata_imx.c b/drivers/ata/pata_imx.c
index 26386f0..b0b18ec 100644 (file)
--- a/drivers/ata/pata_imx.c
+++ b/drivers/ata/pata_imx.c
@@ -119,7 +119,9 @@ static int pata_imx_probe(struct platform_device *pdev)
                return PTR_ERR(priv->clk);
        }
 
-       clk_prepare_enable(priv->clk);
+       ret = clk_prepare_enable(priv->clk);
+       if (ret)
+               return ret;
 
        host = ata_host_alloc(&pdev->dev, 1);
        if (!host) {
@@ -212,7 +214,9 @@ static int pata_imx_resume(struct device *dev)
        struct ata_host *host = dev_get_drvdata(dev);
        struct pata_imx_priv *priv = host->private_data;
 
-       clk_prepare_enable(priv->clk);
+       int ret = clk_prepare_enable(priv->clk);
+       if (ret)
+               return ret;
 
        __raw_writel(priv->ata_ctl, priv->host_regs + PATA_IMX_ATA_CONTROL);